A positioning clamping device for bench drilling and use method thereof

Abstract

The present invention relates to the field of tool and fixture design, and specifically discloses a positioning and clamping device for bench drilling. The positioning and clamping device includes a base plate, a drill jig body, a nut, a clamp spring, a screw, a side positioning column, a side end plate, a front drill sleeve, a rear drill sleeve and a drill template. During processing, the workpiece to be processed is installed inside the clamp spring so that one side end face of the workpiece to be processed coincides with the inner end face of the side end plate; the clamp spring is installed to the side of the drill jig body by a screw to limit the axial transmission, and is locked with a nut; after the side positioning column is installed in the positioning hole in the side end plate, the chuck radially positions the workpiece to be processed; and then the tool is used to process the front and rear holes of the workpiece to be processed through the front drill sleeve and the rear drill sleeve. The device has a simple structure, low cost, and is easy to operate. It can complete the required processing procedures in one clamping, with accurate processing position, high efficiency, improved yield index, and saved auxiliary time.

Description

Technical Field

[0001] The invention relates to the field of tool and fixture design, and specifically discloses a positioning clamping device for bench drilling processing and a use method thereof. Background Art

[0002] In the multi-hole processing process, if CNC machine tools (machining centers) are used for drilling, multiple holes can be processed in one clamping, and the position is accurate, but the processing cost is high; if ordinary bench drills are used for processing, the processing cost can be reduced, but it is difficult to guarantee the size tolerance and position tolerance of each hole.

[0003] For example, a workpiece with a combined cylindrical and conical shape has 12 threaded holes evenly distributed on the cylindrical surface and the arc surface of the cone. However, since the 12 holes have a relative position relationship, each hole must be evenly distributed at a specified position on the circumferential surface, and the size tolerance and position tolerance of each hole must be guaranteed. In view of this problem, a drilling device is urgently needed to improve workpiece processing efficiency, reduce processing costs, and ensure product quality. Summary of the invention

[0004] The technical problem solved by the present invention is that when a bench drill processes evenly distributed multiple holes, the positioning is inaccurate and it is difficult to ensure the size tolerance and position tolerance of each hole.

[0005] In a first aspect, the present invention provides a positioning and clamping device for bench drilling, comprising a base plate 1, a drilling template body 2, a nut 3, a clamp spring 4, a screw 5, a side positioning column 6, a side end plate 7, a front drilling sleeve 8, a rear drilling sleeve 9 and a drilling template 10;

[0006] The jig body 2 is mounted on the bottom plate 1; the jig body 2 is a rectangular parallelepiped with a hollow inner cavity, and an inner hole matching the workpiece to be processed is provided in the inner cavity of the jig body 2; the upper end surface of the jig body 2 is connected to the drilling template 10, the lower end surface is connected to the bottom plate 1, and one end surface is connected to the side end plate 7; the inside of the jig body 2 is connected to a clamp spring 4;

[0007] The nut 3 is sleeved on the outside of the clamp spring 4, and the internal thread of the nut 3 matches the external thread of the clamp spring 4, so as to lock the clamp spring 4;

[0008] The shape of the clamp spring 4 is consistent with the shape of the inner cavity of the jig body 2, and can be installed in the inner cavity of the jig body 2; the clamp spring 4 is provided with an external thread that matches the internal thread of the nut 3; the clamp spring 4 is provided with a long groove notch 4-1, and a waist-shaped groove 4-2 is provided in the radial direction; the long groove notch 4-1 enables the clamp spring 4 to have a clamping effect, thereby completing the clamping of the workpiece; the opening of the waist-shaped groove 4-2 is a rounded rectangle, and the longitudinal width of the waist-shaped groove can match the outer diameter of one end of the screw 5. The screw 5 moves axially in the waist-shaped groove to lock the clamp spring 4 to prevent it from moving axially;

[0009] The screw 5 is installed on the left end face of the jig body 2; the screw 5 is a stepped cylinder, the head end of the screw 5 is an outer square, and the inner end is a stepped shaft with threads; the screw 5 fixes the clamp spring 4 to the inside of the jig body 2, and the outer diameter of the inner end of the screw 5 matches the waist-shaped hole in the clamp spring 4 to limit the axial movement of the clamp spring 4;

[0010] The side positioning column 6 is a mechanical screw structure, and a clamp is processed at the end of the screw rod of the screw structure; the side positioning column 6 is installed in the positioning hole at the middle position of the side end plate 7; the clamp of the side positioning column 6 cooperates with the workpiece to be processed to determine the position of the workpiece to be processed;

[0011] The side end plate 7 is in the shape of a cuboid and is connected to the drilling template 10. A positioning hole is provided in the middle of the side end plate 7 to cooperate with the side positioning column 6.

[0012] The drilling template 10 is a two-stage stepped steel plate. The left end of the first-stage stepped plate of the drilling template 10 is connected to the side end plate 7. The front drill sleeve 8 is embedded in the surface of the first-stage stepped plate, and the rear drill sleeve 9 is embedded in the surface of the second-stage stepped plate. The lower side of the second-stage stepped plate is connected to the drilling template body 2.

[0013] The front drill sleeve 8 is in the shape of a stepped cylindrical sleeve, and an outward boss is designed on the upper end of the front drill sleeve 8. The front drill sleeve 8 is installed on the first step plate of the drilling template 10 and passes through the drilling template 10. The lower surface of the boss fits with the upper surface of the drilling template 10 to play a positioning role; the rear drill sleeve 9 is in the shape of a cylindrical sleeve, and an outward boss is designed on the upper end of the rear drill sleeve 9. The rear drill sleeve 9 is installed on the second step plate of the drilling template 10 and passes through the drilling template 10. The lower surface of the boss fits with the upper surface of the drilling template 10 to play a positioning role.

[0014] Preferably, the base plate 1 has a concave shape that matches the bottom of the drilling template body 2, and the base plate 1 is provided with a threaded hole that matches the drilling template body 2; the drilling template 10 is provided with a threaded hole that matches the drilling template body 2; and the side end plate 7 is provided with a threaded hole that matches the drilling template 10.

[0015] Furthermore, the lower end surface of the base plate 1 is connected to the drilling template body 2 via a base plate bolt 14; the drilling template 10 is connected to the drilling template body 2 via a drilling template fixing bolt 11; and the side end plate 7 is connected to the drilling template 10 via a side end plate bolt 13.

[0016] Furthermore, the tails of the drilling template fixing bolts 11, the side end plate bolts 13, and the bottom plate bolts 14 are all hexagonal in shape, which is convenient for tightening.

[0017] Furthermore, there are four drilling template fixing bolts 11; there are two side end plate bolts 13; and there are four bottom plate bolts 14.

[0018] Furthermore, the drilling template fixing bolts 11, the side end plate bolts 13, and the bottom plate bolts 14 are provided with matching washers 12; the washers 12 are annular structures, and the inner diameters of the washers 12 match the outer diameters of the fixing bolts 11, the bottom plate bolts 14, and the side end plate bolts 14.

[0019] Preferably, the nut 3 is in the shape of a circular ring, and a mesh pattern is provided on the outer circumference to increase friction and facilitate installation.

[0020] Furthermore, four blind holes are evenly distributed on the outer circumference of the nut 3 for use with a wrench during tightening to increase the tightening force.

[0021] Preferably, there are three side positioning columns 6 , and three positioning holes matching the side positioning columns 6 are evenly provided at the same height in the middle of the side end plate 7 .

[0022] In the second aspect, the present invention provides a method for processing using the device described in the first aspect, which specifically includes the following steps: installing the workpiece to be processed inside the clamp spring 4 so that one side end face of the workpiece to be processed coincides with the inner end face of the side end plate 7; installing the screw 5 to the side of the drill template body 2 to limit the axial movement of the clamp spring 4, and locking it with the nut 3; after the side positioning column 6 is installed in the positioning hole in the side end plate 7, the chuck radially positions the workpiece to be processed; and then using a tool to perform hole processing on the workpiece to be processed through the front drill sleeve 8 and the rear drill sleeve 9.

[0023] The beneficial effects achieved by the present invention are as follows: the drilling device of the present invention is tightly arranged, has a simple structure, is low in cost, is easy to operate, can complete the required processing steps in one clamping, has accurate processing position, high efficiency, improves the yield rate index, and saves auxiliary time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front view of the positioning clamping device of the present invention.

[0025] Figure 2 It is a left side view of the positioning clamping device of the present invention.

[0026] Figure 3 It is a front view of the clamp spring structure of the present invention.

[0027] Figure 4 It is a left side view of the clamp spring structure of the present invention.

[0028] Figure 5 It is a front view of the side positioning column structure of the present invention.

[0029] Figure 6 It is a left side view of the side positioning column structure of the present invention.

[0030] Figure 7It is a left view of the drilling template body structure of the present invention. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail in conjunction with the following examples. It should be noted that the present invention is not limited to the following examples.

[0032] Example 1

[0033] A positioning clamping device for bench drilling, such as Figures 1 to 7 As shown, it includes a base plate 1, a drilling template body 2, a nut 3, a clamp spring 4, a screw 5, a side positioning column 6, a side end plate 7, a front drilling sleeve 8, a rear drilling sleeve 9 and a drilling template 10;

[0034] The jig body 2 is mounted on the bottom plate 1; the bottom plate 1 is in a concave shape matching the bottom of the jig body 2, and the bottom plate 1 is provided with four threaded holes matching the jig body 2, which are connected by bottom plate bolts 14; the jig body 2 is a rectangular parallelepiped with a hollow inner cavity, and the inner cavity of the jig body 2 is provided with an inner hole matching the workpiece to be processed; the upper end face of the jig body 2 is connected to the drilling template 10, the lower end face is connected to the bottom plate 1, and one end face is connected to the side end plate 7; the inside of the jig body 2 is connected with a clamp spring 4;

[0035] The nut 3 is sleeved on the outside of the clamp spring 4, and the internal thread of the nut 3 cooperates with the external thread of the clamp spring 4 to lock the clamp spring 4; the nut 3 is in the shape of a circular ring, and a mesh pattern is provided on the outer diameter circumference to increase friction and facilitate installation; four blind holes are evenly distributed on the outer diameter circumference of the nut 3, which are used for a wrench when locking to increase the locking force.

[0036] The shape of the clamp spring 4 is consistent with the shape of the inner cavity of the jig body 2, and can be installed in the inner cavity of the jig body 2; the clamp spring 4 is provided with a long groove notch 4-1, and a waist-shaped groove 4-2 is provided in the radial direction; the long groove notch 4-1 enables the clamp spring 4 to have a clamping effect, thereby completing the clamping of the workpiece; the opening of the waist-shaped groove 4-2 is a rounded rectangle, and the longitudinal width of the waist-shaped groove can match the outer diameter of one end of the screw 5. The screw 5 moves axially in the waist-shaped groove to lock the clamp spring 4 and prevent it from moving axially;

[0037] The screw 5 is installed on the left end face of the jig body 2; the screw 5 is a stepped cylinder, the head end of the screw 5 is an outer square, and the inner end is a stepped shaft with threads; the screw 5 fixes the clamp spring 4 to the inside of the jig body 2, and the outer diameter of the inner end of the screw 5 matches the waist-shaped hole in the clamp spring 4 to limit the axial movement of the clamp spring 4;

[0038] The side positioning column 6 is a mechanical screw structure, and a clamp is processed at the end of the screw rod of the screw structure; the side positioning column 6 is installed in the positioning hole in the middle position of the side end plate 7; the clamp of the side positioning column 6 cooperates with the workpiece to be processed to determine the position of the workpiece to be processed; there are three side positioning columns 6;

[0039] The side end plate 7 is in the shape of a rectangular parallelepiped and is connected to the drilling template 10. Three positioning holes that cooperate with the side positioning columns 6 are evenly arranged at the same height in the middle position of the side end plate 7; the side end plate 7 is provided with two threaded holes that cooperate with the drilling template 10 and is fixed by two side end plate bolts 13.

[0040] The drilling template 10 is a two-stage stepped steel plate. The left end of the first-stage stepped plate of the drilling template 10 is connected to the side end plate 7. The front drill sleeve 8 is embedded in the surface of the first-stage stepped plate, and the rear drill sleeve 9 is embedded in the surface of the second-stage stepped plate. Four threaded holes matching the drilling template body 2 are provided on the second-stage stepped plate, and the drilling template body 2 is connected by four drilling template fixing bolts 11.

[0041] The front drill sleeve 8 is in the shape of a stepped cylindrical sleeve, and an outward boss is designed on the upper end of the front drill sleeve 8. The front drill sleeve 8 is installed on the first step plate of the drilling template 10 and passes through the drilling template 10. The lower surface of the boss fits with the upper surface of the drilling template 10 to play a positioning role; the rear drill sleeve 9 is in the shape of a cylindrical sleeve, and an outward boss is designed on the upper end of the rear drill sleeve 9. The rear drill sleeve 9 is installed on the second step plate of the drilling template 10 and passes through the drilling template 10. The lower surface of the boss fits with the upper surface of the drilling template 10 to play a positioning role.

[0042] The tails of the template fixing bolts 11, the side end plate bolts 13, and the bottom plate bolts 14 are all external hexagonal, which is convenient for tightening. The template fixing bolts 11, the side end plate bolts 13, and the bottom plate bolts 14 are provided with matching washers 12; the washers 12 are annular structures, and the inner diameters of the washers 12 match the outer diameters of the fixing bolts 11, the bottom plate bolts 14, and the side end plate bolts 14.

[0043] Example 2

[0044] The device described in Example 1 is used to process a workpiece with an outer shape of a combination of a cylinder and a cone. The workpiece has 12 threaded holes evenly distributed on the cylindrical surface and the arc surface of the cone, and specifically includes the following steps: the workpiece to be processed is installed inside the clamp spring 4, and one side end face of the workpiece to be processed coincides with the inner end face of the side end plate 7; the screw 5 is installed in the threaded hole on the side of the drill template body 2 to limit the axial transmission of the clamp spring 4, and is locked with the nut 3; after the side positioning column 6 is installed in the positioning hole in the side end plate 7, the chuck radially positions the workpiece to be processed; then the tool is used to process the front and rear threaded holes of the workpiece to be processed through the front drill sleeve 8 and the rear drill sleeve 9.

Claims

1. A positioning and clamping device for bench drilling, characterized in that: It comprises a base plate (1), a drilling template body (2), a nut (3), a clamp spring (4), a screw (5), a side positioning column (6), a side end plate (7), a front drilling sleeve (8), a rear drilling sleeve (9) and a drilling template (10); The drilling jig body (2) is mounted on the bottom plate (1); the drilling jig body (2) is a rectangular parallelepiped with a hollow inner cavity, and an inner hole matching the workpiece to be processed is provided in the inner cavity of the drilling jig body (2); the upper end surface of the drilling jig body (2) is connected to the drilling template (10), the lower end surface is connected to the bottom plate (1), and one end surface is connected to the side end plate (7); the inside of the drilling jig body (2) is connected to a clamp spring (4); The nut (3) is sleeved on the outside of the clamp spring (4), and the internal thread of the nut (3) matches the external thread of the clamp spring (4), so as to lock the clamp spring (4); The outer shape of the clamp spring (4) is consistent with the inner shape of the drilling template body (2), and can be installed in the inner cavity of the drilling template body (2); the clamp spring (4) is provided with an external thread that matches the internal thread of the nut (3); the clamp spring (4) is provided with a long groove notch (4-1), and a waist-shaped groove (4-2) is provided in the radial direction; the opening of the waist-shaped groove (4-2) is a rounded rectangle, and the longitudinal width of the waist-shaped groove can match the outer diameter of one end of the screw (5), and the screw (5) moves axially in the waist-shaped groove to lock the clamp spring (4); The screw (5) is installed on the left end surface of the drilling template body (2); the screw (5) is a stepped cylinder, the head end of the screw (5) is an outer square, and the inner end is a stepped shaft with a thread; the screw (5) fixes the clamp spring (4) inside the drilling template body (2), and the outer diameter of the inner end of the screw (5) cooperates with the waist-shaped hole in the clamp spring (4) to limit the axial movement of the clamp spring (4); The side positioning column (6) is a mechanical screw structure, and a clamp is processed at the end of the screw rod of the screw structure; the side positioning column (6) is installed in a positioning hole at the middle position of the side end plate (7); the clamp of the side positioning column (6) cooperates with the workpiece to be processed to determine the position of the workpiece to be processed; The side end plate (7) is in the shape of a rectangular parallelepiped and is connected to the drilling template (10). A positioning hole is provided in the middle of the side end plate (7) to cooperate with the side positioning column (6); The drilling template (10) is a two-stage stepped steel plate. The left end of the first-stage stepped plate of the drilling template (10) is connected to the side end plate (7). The front drill sleeve (8) is embedded in the surface of the first-stage stepped plate, and the rear drill sleeve (9) is embedded in the surface of the second-stage stepped plate. The lower part of the second-stage stepped plate is connected to the drilling template body (2). The front drill sleeve (8) is in the shape of a stepped cylindrical sleeve, and an outward boss is designed on the upper end of the front drill sleeve (8). The front drill sleeve (8) is installed on the first step plate of the drill template (10) and passes through the drill template (10), and the lower surface of the boss is in contact with the upper surface of the drill template (10); the rear drill sleeve (9) is in the shape of a cylindrical sleeve, and an outward boss is designed on the upper end of the rear drill sleeve (9). The rear drill sleeve (9) is installed on the second step plate of the drill template (10) and passes through the drill template (10), and the lower surface of the boss is in contact with the upper surface of the drill template (10); The bottom plate (1) is in a concave shape matching the bottom of the drilling template body (2); the bottom plate (1) is provided with a threaded hole matching the drilling template body (2); the drilling template (10) is provided with a threaded hole matching the drilling template body (2); the side end plate (7) is provided with a threaded hole matching the drilling template (10); The lower end surface of the bottom plate (1) is connected to the drilling template body (2) via bottom plate bolts (14); the drilling template (10) is connected to the drilling template body (2) via drilling template fixing bolts (11); and the side end plate (7) is connected to the drilling template (10) via side end plate bolts (13); Four blind holes are evenly distributed on the outer diameter circumference of the nut (3) for use with a wrench during locking to increase the locking force.

2. The positioning clamping device according to claim 1, characterized in that: The tails of the drilling template fixing bolts (11), the side end plate bolts (13) and the bottom plate bolts (14) are all external hexagonal.

3. The positioning clamping device according to claim 2, characterized in that: There are four drilling template fixing bolts (11) in total; there are two side end plate bolts (13) in total; and there are four bottom plate bolts (14) in total.

4. The positioning clamping device according to claim 3, characterized in that: The drilling template fixing bolts (11), the side end plate bolts (13), and the bottom plate bolts (14) are provided with matching washers (12); the washers (12) are annular structures, and the inner diameter of the washers (12) matches the outer diameter of the fixing bolts (11), the bottom plate bolts (14), and the side end plate bolts (13).

5. The positioning clamping device according to claim 1, characterized in that: The nut (3) is in the shape of a circular ring, and a mesh pattern is provided on the outer circumference.

6. The positioning clamping device according to claim 1, characterized in that: There are three side positioning columns (6) in total, and three positioning holes matching the side positioning columns (6) are evenly arranged at the same height in the middle of the side end plate (7).

7. A method for processing using the positioning clamping device according to any one of claims 1 to 6, characterized in that: The specific steps include: The workpiece to be processed is installed inside the clamp spring (4) so ​​that one end face of the workpiece to be processed coincides with the inner end face of the side end plate (7); the clamp spring (4) is limited in axial transmission by being installed on the side of the drilling jig body (2) through a screw (5), and is locked with a nut (3); after the side positioning column (6) is installed in the positioning hole in the side end plate (7), the chuck radially positions the workpiece to be processed; and then a tool is used to perform hole processing on the workpiece to be processed through a front drill sleeve (8) and a rear drill sleeve (9).

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